Abstract
Attempt to look into the nature of solar activity and variability have increased importance in recent days because of their terrestrial relationships. In the present work we have attempted to compare the solar activity events during first six years (2008–2013) of the ongoing solar cycle 24 with first six years (1996–2001) of solar cycle 23. To that end, we have considered sunspot numbers, F10.7 cm solar flux, halo CMEs and geomagnetic storms as comparison parameters. Sunspot number during the year 2008–2013 varied from 0 to 96.7 while during the year 1996 to 2001 it was observed from 0.9 to 170.1. Solar radio flux (F10.7 cm index) varied from 65 to 190 during the years 2008–2013 while it was observed from 65 to 283 during the years 1996–2001. 197 cases of halo CMEs (width=360∘) in solar cycle 23 (1996–2001) and 177 cases of halo CMEs (width=360∘) in solar cycle 24 (2008–2013) are investigated. 287 and 104 geomagnetic storm cases (Dst varies between −50 and −350 nT) are analysed during the half period of solar cycle 23 and 24 respectively. Comparative results indicate that solar cycle 23 was more pronounced in comparison of solar cycle 24.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Agee, E.M., Cornett, E., Gleason, K.: J. Climate 23, 6110 (2010)
Brueckner, G.E., et al.: Sol. Phys. 162, 357 (1995)
de Jager, C., Duhau, S.: J. Atmos. Sol.-Terr. Phys. 71, 239 (2009)
Gonzalez, W.D., Joselyn, J.A., Kamide, Y., Kroehl, H.W., Rostoker, G., Tsurutani, B.T., Vasyliunas, V.M.: J. Geophys. Res. 99, 5771 (1994)
Gopalswamy, N., Yashiro, S., Akiyama, S.: Geophys. Res. 112, A06112 (2007)
Gopalswamy, N., Yashiro, S., Michalek, G., Xie, H., Mäkelä, P., Vourlidas, A., Howard, R.A.: Sun Geosph. 5, 7 (2010)
Howard, R.A., Michels, D.J., Sheeley, N.R. Jr., Koomen, M.J.: Astrophys. J. 263, L101 (1982)
Howard, R.A., Sheeley, N.R. Jr., Michels, D.J., Koomen, M.J.: J. Geophys. Res. 90, 8173 (1985)
Kenneth, D.: IEE Electromagnetic Waves Series, p. 34 (1990). ISBN 0-86341-186-X
Kuznetsov, V.V., Plotkin, V.V., Nesterova, G.V., Nesterova, I.I.: Earth Planets Space 50, 57 (1998)
Loehle, C., Singer, S.F.: Can. J. Earth Sci. 47, 1327 (2010)
Loewe, C.A., Prolss, G.W.: J. Geophys. Res. 102, 14,209 (1997)
Rycroft, M.J.: Space weather and hazards to application satellites. In: Pelton, J.N., Madry, S., Camacho-Lara, S. (eds.) Handbook of Satellite Applications, pp. 1175–1193. Springer Science-Business Media, New York (2013)
Russell, C.T., Luhmann, J.G., Jian, L.K.: Rev. Geophys. 48, RG2004 (2010). doi:10.1029/2009RG000316
Siingh, D., Singh, R.P., Singh, A.K., Kulkarni, M.N., Gautam, A.S., Singh, A.K.: Surv. Geophys. 32, 659 (2011)
Singh, A.K., Siingh, D., Singh, R.P.: Surv. Geophys. 31, 581 (2010)
Singh, A.K., Tonk, A., Singh, R.: Ind. J. Phys. (2014, accepted)
Sugiura, M., Kamei, T.: IAGA Bulletin, vol. 40. BerthelJer, A., MenvielleI, M. (eds.) SGI Publ. Off., France (1991)
Tapping, K.F.: J. Geophys. Res. 92, 829838 (1987)
White, J., Tapping, K.: QST. The American Radio Relay League February, 39–45 (2012)
Acknowledgements
A.K.S. is thankful to Indian Space Research Organization (ISRO) for providing partial financial support under CAWSES India phase II program. Authors are also thankful to various data providers.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Singh, A.K., Tonk, A. Solar activity during first six years of solar cycle 24 and 23: a comparative study. Astrophys Space Sci 353, 367–371 (2014). https://doi.org/10.1007/s10509-014-2067-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10509-014-2067-8